The aircraft, with a decrease in fog, deviated considerably from the approach scheme and crashed into a rocky mountainside in 30 km from the airport at an altitude of 3000 m. On board were specialists and heads of the design bureau Antonov, Kharkov aircraft factory and other enterprises that were sent to Iran for Presentation of An-140, which is built under license in this country. The crew did not determine the distance to the airport with the help of rangefinder equipment, did not report the problems to the dispatcher and continued approach to landing, using the navigation global onboard system (GPS), which is not provided by the flight operations manual.

Data on victims:

Total on board were people 44: 6 38 crew members and passengers. Total killed 44 people: crew 6, 38 passengers.